On Wed, 25 Mar 2009, Rob Jansen wrote:
> Date: Wed, 25 Mar 2009 09:39:06 +0100
> From: Rob Jansen <[email protected]>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <[email protected]>
> To: "Enhanced Machine Controller (EMC)" <[email protected]>
> Subject: Re: [Emc-users] using a 5i20 for stepper motor control
>
> Sebastian, Alex, Eric, Jon,
>
> (did I forget anyone who responded, then I'm sorry)
>
> Thanks for all the tips.
> As Sebastian suggested I will definitely do a system analysis before
> spending money but spending 200 USD on a 10,000 EUR machine is not that
> high an investment. I will not opt for the 7i43 on the parallel port, I
> was looking at th 5i20 just to get rid of the parport which is not on
> all my mother boards. The question then is if PCI is the proper choice
> (will there also be a PCI express version of the card?).
We will have PCI express versions of Anything I/O cards later this year (I'm
playing with one now (144 I/O pins 2M gate FPGA), but HostMot2 driver support
and firmware changes will probably extend the EMC support time frame to the
end of this year. This is because DMA will be required for good performance
with our PCIe cards, and both the driver and my firmware need to be updated to
support DMA.
That said, I would not worry too much about PCI dissapearing, I expect
Motheboards with PCI to be available for at least 5 more years (PCI-PCIe are
trivial to translate). Because of this ease and transparancy of PCI-PCIe
translation, there will also be low cost mezzanine cards that allow
a few PCI cards to plug into a PCIe slot.
Peter Wallace
Mesa Electronics
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